Mr Whittaker told the jury that he carried out a forensic study on a jumper that was allegedly worn by John Mason during the attack on Angelika Dries-Jenkins.

Giving evidence Mr Whittaker said he found blood and DNA belonging to both Angelika Dries-Jenkins and John Mason on the jumper.

The court was told that the chances of the blood and DNA belonging to anyone other than John Mason and Angelika Dries-Jenkins were "one in a billion."

The prosecution claim that Mason discarded the jumper in a car park bin in Haverfordwest shortly after the pensioners murder.

Earlier today the court had heard how Angelika Dries-Jenkins was killed by 10 or more blows to the head with a blunt object.

Pathologist Dr Derek James told the court how Ms Dries-Jenkins suffered a number of skull fractures caused by the use of "substantial force."

55 year old John Mason, from Llandissillio, is accused of torturing Angelika Dries-Jenkins for her bank car pin number before brutally murdering her. He is also accused of withdrawing close to a thousand pounds from his alleged victims bank account to fund a wedding he had planned with his fiancé

Mason denies murder and robbery and the case at Swansea Crown Court continues.